03 GMC Envoy 4.2 no start. No signal @ coils, Is this a PCM problem?

Asked by Sep 29, 2017 at 10:41 AM about the 2003 GMC Envoy XL SLT 4WD

Question type: Maintenance & Repair

8 Answers

3,250

Have you tested crankshaft and camshaft sensors? Any check engine light?

105,385

Maybe, but like mentioned above I'd be looking at sensor problems first, if you don't have a scanner, either buy a good one, make sure it has live data and freeze frame capabilities. Or if your in the right area some parts store will rent one out.

Yes, both crank & cam sensors are providing feedback.

No codes.

105,385

They are not suppose to show feedback, you should see a good clean signal pulse on both of the sensors, if it is showing any "feedback" or "static" check the wiring for chafing then if that is good replace the sensors.

sorry, wrong word, pulse is what I should have said.

105,385

Ok so next check to see if the ECM is sending out a signal on the spout wire at the ECM for each coil, if no signal the you have an ECM problem, if you have an spout signal then you have a wiring issue.

1 of 1 people found this helpful.

no signal at ECM, must be ECM. Checked continuity, all spout wires ck out.

Your Answer

Envoy XL

Looking for a Used Envoy XL in your area?

CarGurus has 18 nationwide Envoy XL listings starting at $1,987.

Postal Code:

GMC Envoy XL Experts

  • #1
    mhgcards
    Reputation
    200
  • #2
    John Leone
    Reputation
    140
  • #3
    COMETGUY61
    Reputation
    110
View All

Related Models For Sale

Used GMC Envoy
4 Great Deals out of 24 listings starting at $2,945
Used GMC Yukon XL
15 Great Deals out of 693 listings starting at $4,499
Used GMC Yukon
5 Great Deals out of 861 listings starting at $3,800
Used Chevrolet Tahoe
3 Great Deals out of 750 listings starting at $3,995
Used Chevrolet Suburban
3 Great Deals out of 548 listings starting at $2,871
Used Ford Explorer
16 Great Deals out of 1,578 listings starting at $3,395
Used Chevrolet TrailBlazer
32 listings starting at $3,900
Used Dodge Durango
167 Great Deals out of 1,108 listings starting at $4,490
Used Jeep Grand Cherokee
132 Great Deals out of 3,622 listings starting at $3,500

Used Cars For Sale

2006 GMC Envoy XL SLT 4WD For Sale
2 listings starting at $4,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.