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02-08 Vortec 4.2L I-6 Engine and Drivetrain [Archive] - Page 4 - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum
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  1. alternator
  2. TrailVoy diffs same as H3?
  3. Head Gasket Replacement
  4. Oil Life Monitor/indicator/sensor
  5. Cool pic, inside of the 4.2L oil pan.
  6. Gas Mileage SUCKS
  7. Powerbraking...
  8. CEL Flashing - pulled codes...Help!
  9. uneasy recover after rev
  10. Oil filter observations..
  11. Anyone with 5.3 or 6.0 re-set fuel trims? More pick-up!!!
  12. better mileage out of a I-6?
  13. Advise on which brand of scanner
  14. BDS lift kit
  15. Fan Clutch: OEM or Aftermarket?
  16. service engine soon light
  17. Looking for info...
  18. Really need some tranny help
  19. Dashhawk on 4.2 I6 question
  20. Where Front Axle Reservoir is?
  21. RPM's @ Cruising Speeds....?
  22. whats that part on the front grille that
  23. Best fluids for driveline
  24. Humming Noise
  25. busted my rear
  26. Front End vibration while turning
  27. New member seeking help Knocking noise
  28. replacing fan CLUTCH
  29. Finally, 1 good sign
  30. help asap please
  31. clunk is what i hear
  32. Locking Differential or Limited Slip?
  33. Looking for some good topend photos
  34. 3.42 vs 3.73
  35. Towing question about the I6
  36. The G80...
  37. SES Light - Question
  38. SS Rim and Performance ?
  39. driving with e-brake on
  40. Obdii
  41. Rear Hatch got Jacked Up!
  42. E85 instead of petrol in a trail?
  43. How much HP can the stock tranny /clutch hold?
  44. 5.3l 2004 engine swap
  45. 4.10 gears for $229.00
  46. aww my first real code.
  47. pop goes the weasel
  48. I6 Power band....why?
  49. vortec 4200 racing engines
  50. Serp. Belt Part Number?
  51. all 04 trailvoy owners
  52. junk yard 4.10s
  53. alternator ?
  54. stomp and wait..then go
  55. Map Sensor
  56. G80 Part number....
  57. cranking really slow when started
  58. 03 Trailblazer towing/downshift problems
  59. Synthetic Oil for High Miles?
  60. Anyone in SE Michigan with a Tech 2?
  61. Auxillary Emissions Control
  62. Whistling from Airbox
  63. 25mpg on 04 xuv, more testing coming soon!
  64. power steering pump pressure?
  65. Spline count
  66. Pulled my files (Scarabepic)
  67. What version PCM?
  68. Gearz TV
  69. Easy MPG GAINER
  70. Acceleration on the Highway, advice sought.
  71. Check Engine Light
  72. If i was to sell my truck
  73. it's oil time
  74. G80 install
  75. Downfall
  76. MPG thread, only 2002 TB'S info
  77. oil pressure???
  78. look what I found.
  79. Stalling
  80. would the A/C effect my speed?
  81. Service engine light just came on
  82. Envoy xuv i6 motor sounds like a school bus!!
  83. Towing Weight?
  84. Whats the deal with Spark Plugs...
  85. gears question
  86. FEDEX love them.
  87. MPG Improvement with ECM?
  88. 2005 TB L6 warm up time question
  89. Oil change??
  90. If I'm under the recall numbers
  91. AnyONE IN SOUTH FLORIDA??
  92. How do you tell...
  93. Differential fluid changes
  94. Rear axle/tires seem to be lagging???
  95. Any Mechanics?
  96. odd noise
  97. My TB's new engine story!!
  98. Couple newbie questions!!!
  99. big enough?
  100. 03' Trailblazer DTC C0281
  101. Shady A/C switch
  102. new member
  103. Check Engine Light
  104. PCM
  105. Locking rear diff...
  106. diff fluid change with the G80
  107. Operating Temp high
  108. Funny noise I need some help
  109. Finally Replace the Wheel Bearing
  110. Need Help! Engine light.
  111. Running rich all the time...
  112. Gas mileage while towing a camper
  113. 20 minutes for a CASE relearn?
  114. Exploded views ???
  115. Stinky A/C and Hi
  116. i need help with my o4 trailblazer
  117. Axle Ratio Question
  118. 2004 Trailblazer LS
  119. dead envoy
  120. U-joints at 98,000 miles?
  121. Relay orientation, help.
  122. front driveshaft turning?
  123. G80 differential install
  124. better sound
  125. E85 Ready?
  126. Drain/fill plugs on T-case
  127. 4.2l life expectancy and required repairs
  128. Dealer repairs
  129. G80 Demo Video on YouTube...
  130. am i dumb
  131. passenger door
  132. '06 TB won't start
  133. u-joint factory warranty item?
  134. how do i do this
  135. Trailer Brake Question
  136. 05 4.2L swap into a 02 Bravada
  137. OMG!! Did I Screw Up My Tranny?!
  138. Engine noise
  139. Ok I'm a little lost for words with this MPG....
  140. tranny blown after 29k?
  141. Aeroforce Gauge
  142. Rear end blew after 14,000 miles Need everyones advice please
  143. How to figure out size of rear end i have?
  144. dealer called me this afternoon
  145. Gear Ratio
  146. TM question
  147. I had this crazy idea...
  148. Rear end is out, need help ASAP! PICS
  149. what are these ticks/clicks/noises/clunks?
  150. 4.2 Differences
  151. Isuzu ascender problems already at 60 miles
  152. Power Steering Flush
  153. 5w20
  154. I6 tunes
  155. V6 Power?
  156. Anybody Cold?
  157. Inner bearing/axel disconnect assembly
  158. TQ management
  159. How hard is it to change the oil on I6?
  160. corvetter servo
  161. Gearing Question??
  162. Question about 2005 I6 HP
  163. More power needed.
  164. Engine coolant change
  165. Whay is it.
  166. Adding a O2??
  167. Something strange happening
  168. 4.2 Oil Cooler
  169. squeaking sound
  170. New Struts!
  171. Got my hands on a G80 differential...
  172. Note: Misfire Codes
  173. Track Times
  174. ran out of gas
  175. Fresh from the Dealer...AND WORSE!!
  176. Need help with belt noise
  177. Bassani Driveby
  178. Check Engine Light (UH OH)
  179. Dash noise
  180. Something is wrong! I need HELP!!
  181. Screech on Hard Acceleration? Thoughts?
  182. 15k service....
  183. Scratch another Mod off my list
  184. broken manifold bolt
  185. high compression
  186. Bump between 1 and 2
  187. change oil, dealer or not?
  188. edge products
  189. Help from the Roadie Requested
  190. Help with PS Pump
  191. engine dying help please
  192. 2005 I6 Envoy Do these engines have a pcv
  193. MGA 4200 Swap
  194. Well, I think I'm going to have to bend over for the dealer this week...
  195. I beat an F-150 tonight!
  196. Looking to buy need some feed back
  197. Idler Pulley Question
  198. do these actually work?
  199. TB/Envoy 2002-2003 full diagrams available
  200. Revving Question
  201. engine stall?
  202. turning traction control off
  203. Wheel spin ?
  204. Engine oil light
  205. Cat is getting plugged AGAIN!!
  206. Just found on E-Bay!
  207. power brake
  208. Quick question with setting idle
  209. 2004 Envoy Fuel Filter Location ??
  210. Anybody tried Lucas Semi-Synthetic ATF?
  211. Trailvoy wont burn rubber
  212. spark plug lowcal
  213. High Idle question
  214. MPG...
  215. Maintenance on Diff's
  216. Need help finding a 2004 TB TSB for PCM re-flash
  217. New guy needs some help....
  218. Trans Flush at 130K?
  219. Who's gettin' the worst MPG out there??
  220. Fan Clutch
  221. Battery Question....
  222. 22" wheels installed tranny sounds funny/speedo gauge
  223. Passenger airbag off
  224. Any Preventiave Maintenace to extend life of 02 TB?
  225. How cold are you guys?
  226. Best way to launch AWD
  227. only 200 miles on tank of gas
  228. Yeoman
  229. DTC p0172
  230. Weird noise..Is
  231. What does the G80 mean?
  232. oil pressure
  233. ready for computer reflashing
  234. Who would spend $200.00
  235. Temperature Resistor Tuning ??
  236. Drivetrain Service
  237. Need 02 TB Diff info...
  238. Help with a check engine light
  239. Spare Tire Tank / Autogas
  240. 05 Trailblazer chugging
  241. Found Oil On My New Cemented Driveway
  242. Tb Adjusting To 22 Inch Wheels
  243. 2005 Envoy Differential problems
  244. drive goes nowhere
  245. [7/17] Huge Voltage Fluctuation
  246. Power???
  247. Cost for work done at Dealer ??
  248. Which way is best?
  249. hyper ground wires
  250. Detroit Area Trailblazer?