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Engine Tunes/Mods [Archive] - Page 4 - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum
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  1. 2002 TB thermostat part number
  2. Pcm tuning
  3. Hello
  4. Got my PCMforless tune
  5. Considering Swapping to 6.0L engine
  6. Newbie Needs Air Bleed Hose Lesson
  7. need gm mechaincs help (timing 4.2 envoy)
  8. Just a few questions about PCMforLESS tune
  9. do i need a nother case relearn
  10. 4.2 I6, about to give up!
  11. PCM TUNE + Advice ASAP
  12. How am i supposed to wait a week?
  13. Pcm4less
  14. ls1 or truck lsx motor swap?
  15. PCM for Less vs. Performance Chip
  16. Tuning Rochester NY O2 problem
  17. PCMS For Less Announcement
  18. Model Year comparisons- tuning
  19. Oil light stays on for a while?
  20. Engine Mod idea for the 5.3L
  21. Warning!!! About tunes and GM service!
  22. specs for 4.2 sparkplugs
  23. PCM Tune question
  24. Need Recommendation for place (So Cal) to do Case Relearn
  25. so, did anyone try the 2-bar on stock pcm yet?
  26. Replace Spark Plugs ?
  27. Gas Mileage improvements!!
  28. Possible Tuning Programs?
  29. update 2004 engine works in 2003 ext
  30. Tuner q's
  31. Engine cranks well, no attempt to run
  32. New Thermostat?
  33. STS Turbo,
  34. Cleaning the fuel injectors fixed alot of problems (TB 2007 LS I6 4x4)
  35. MAGNACHARGED and supercharged TB whats the difference? how they work ...?
  36. ABS and now grinding noises...
  37. Speedometer Calibrator
  38. How much is for a reflash?
  39. Maintenance
  40. Just changed my spark plugs...
  41. not happy with EFI LIve with TB...
  42. Super Charger For 4.2 I6 !
  43. PO300 code
  44. PCMforless or performance tune?
  45. 2002 Envoy RPM's running high, making noise
  46. 4.2L Camshaft?
  47. PCMforless Tune and Transmission shifts 2-3
  48. Indexing Spark Plugs
  49. What to do before a PCMforLess tune
  50. What tuners are available?
  51. i hear a noise when my truck shifts?
  52. PCMforless max out fuel injectors?
  53. PCMforless.. Am i expecting too much?
  54. Engine dress-up
  55. Cam/Crack Position
  56. m3 Inline 6 parts on Vortec 4200 :D
  57. Okay, so a V12 SS
  58. 4.2 Vortec I6 valve cover removal
  59. how do we get alot of power out of our i6s?
  60. pcmforless or dealer flash?
  61. Tune Up
  62. PCMforLESS shift firmness
  63. Changing spark plugs
  64. code: P0016 with bad idle at start
  65. Case relearn
  66. Got my Trailblazer smogged great results
  67. Need help. Change oil light, and "Cal Err" after Security relearn
  68. pcm upgraded
  69. Threads on engine for temp sensor
  70. Props to PCMFORLESS
  71. 02 Envoy i6 where can find electric fan conversion
  72. QUESTIONS on efan conversion??
  73. First major changes
  74. 2006 hot rod 4200 engine dyno results
  75. throttle body as well as sea foam application
  76. C6 Corvette efan installed
  77. whining/grinding noise while accelerating
  78. cam crank sensor mismatch
  79. nitrous
  80. Avid Module and Flex-a-lite fan are on the way!
  81. HP TUNER uses and credits.
  82. Engine and Tranny swop
  83. 4.2L Turbo Kit?
  84. Changing Spark Plugs
  85. problems after installing a new battery
  86. fan clutch?
  87. boost question
  88. 4200 Camshaft blank group buy now open
  89. EFILive and/or PCMforLess??
  90. Have you noticed a difference after the E Fan?
  91. 04 I6 to 06 I6
  92. need more power
  93. spark plugs
  94. fan clutch relay?
  95. 2004 envoy slt xl serpentine belt issue
  96. Need tune and help
  97. Need pic of P6 PCM (2006+ TrailVoy)
  98. Ebay Engines
  99. E-fans for 2007 TB?
  100. RPM Flux
  101. Ported heads ready to bolt on - interest?
  102. programmers like bully dog
  103. Reduce Engine Speed Light On
  104. CASE relearn procedure on an Aeroforce gauge?
  105. More performance
  106. Throttle body help '04 Trailblazer
  107. Model Year HP differences
  108. Fuel Economy Decreasing
  109. [SOLVED] PCM upgrade who to use?
  110. what is the gap size '04 trailblazer
  111. threw a code over the weekend looking for clarification
  112. How-to C6 efan installation
  113. SS throttle body swap?
  114. cruise pulsating?
  115. sputtering
  116. How good do these work?
  117. How do I change my o2 sensor?
  118. Newbie
  119. Another Gas Mileage Thread
  120. Seafoam Treatment Question
  121. Nitrous
  122. Flex Fuel?
  123. 2002 Trailblazer Tune up
  124. Thermostat issues
  125. pcmforless? link attached
  126. Code will not go away!! HELP!
  127. PCM Tune Again?
  128. Turbo or supercharge
  129. Was going to get tune or should I wait
  130. TUNE Core Program or Loaner and Why?
  131. PCMForLess Tuning + K&N 63 Series CAI = Totally Friggin Awesome!
  132. PCM core for sale cheap
  133. 02 envoy serpentine belt
  134. What year pcm is interchangable for I6
  135. Cams w/Ground Base Circle?
  136. Oil leak help
  137. Pcm forless tune question
  138. Crate Motor
  139. engine weight
  140. E-Fans swap-out
  141. Downshifting while cruising highway speeds
  142. AC delco iridium plugs- pre-gapped?
  143. Anyone know of headers as of September 12, 2009 for I6
  144. 05 throttle body ?
  145. [SOLVED] No more stalling - fuel pump went bad
  146. Pinging Noise when Cold
  147. Swap a 4.2L for a LS1 5.7L
  148. My I6 TB dyno chart "GOT A HUGE PROBLEM". Help please"efi-diy& all"
  149. Change of spark plugs imminent
  150. Gas Mileage
  151. I5 supercharger work on I6?
  152. Pcmfor less (worth it or just ok)
  153. Oil Comparison
  154. [SOLVED] PCM Install with Pics??
  155. Custom crate motor install..Balanced and bluprinted
  156. Is there a recall for the engine program
  157. Spark Plugs
  158. how hard to change 02 pcm to 06 pcm
  159. Gearing for MPG
  160. Removing the exhaust cam position actuator solenoid>
  161. PCM tune at home Questions
  162. performance
  163. oiled up spark plug problem
  164. Intake Manifold Cover Removal
  165. Torque converter lockup ?
  166. Royal Purple oil change and rear differential
  167. Engine dyno flog - shared cost
  168. Wolf's Head DX III-H/M ATF
  169. PCM Tune?
  170. obdll pcm
  171. High output ignition coils installation kit
  172. Swapping PCM4less for the stock PCM
  173. 2006 Trailblazer EFI Live
  174. OKAY I searched but still have a lot of Q's
  175. Head swap...
  176. Pcm tune + jet chips upgrade?
  177. Hypertech or Predator programmer?
  178. Another Mod done.
  179. Oil, Lube and fluid general info
  180. PCM Tune at home...
  181. auto climate controlled fan (AC)
  182. MPG poor
  183. Blown Off Oil Filter Twice
  184. Just ordered
  185. where do i start
  186. 4.2 Camaro?
  187. LS to SS Conversion
  188. Ahhhhhhh!!!!!!! intermittent fuel gauge
  189. vibration
  190. looking for good tune up or PCM type place
  191. Replace TPS (throttle position sensor)
  192. Harness Mods & PCM Reflash
  193. Rough idle with PCM loaner
  194. Question About Seafoam
  195. Envoy hesitates on acceleration
  196. E3 or NGK Laser Iridium spark plugs ?
  197. Where to tap AC engaged?
  198. compression test
  199. Want to thank Kelly and PCMforless
  200. Stalling, Surging and off idle hesitation
  201. Power Adders
  202. inexpensive performance?!
  203. 2003 4200 vortec (new here)
  204. Question on sluggish throttle response.
  205. Oil Additives ??
  206. Spark Plug Change
  207. Reduced Engine Power Light Help
  208. [SOLVED] Got a tune and then code PO327?
  209. Who else is doing your own tuning?
  210. Spark Plugs
  211. Engine running warm!?!?
  212. I had no idea...
  213. Quick Question about 7.0 Quarts
  214. what size rear end
  215. reduced engine power light
  216. SES light on , unable to get code from ODB-II
  217. Engine light and fan noise
  218. Will attempt plug change this weekend..
  219. installed pcmforless tune need help!
  220. will this fit?
  221. engine swap
  222. Vehicle stalls when decrease speed
  223. BAD mpg, low temp?, LOUD idle, and more! YAY!
  224. Does a PCM Tune Effect the Oil Life Monitor?
  225. engine code P0440
  226. New here need a little help.
  227. Volumetric Efficiency
  228. 6 cyl mileage survey... / TB-Envoy recommendations needed!!!
  229. Engine Maintenance
  230. flex fans...will they work on our trucks?
  231. 4200 into '54 Chev Project
  232. Diagnostic software recomendation
  233. P0128 error and coolant
  234. Best Oil Filter???
  235. extreme 6l engine tuning
  236. Finch Fuel Cataylist
  237. New 4.2 liter engine
  238. Terrible Mileage
  239. Spark Plug Advice
  240. How to seafoam your 4.2l Gmt-360s
  241. Throtle body spacers
  242. Engine Removal
  243. vortec and jeep 258ci 4.2 i6
  244. Case relearn?
  245. Just wondering is there any chips out there that will give me better fuel mileage.
  246. [SOLVED] TB gauge install
  247. I-6 fuel mileage
  248. Oil Pressure roller coaster
  249. 4.2 Engine Swap
  250. Changing spark plugs on the 4.2, with pics!!!